Calcium, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calcium, a community in Jefferson County, New York.
Overnight
41°F
Patchy Fog
Patchy fog after 3am. Partly cloudy, with a low around 41. Northeast wind around 5 mph.
7-day forecast for Calcium
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 41°F | Patchy Fog | 5 mph NE | 0% |
| Saturday | 64°F | Patchy Fog then Mostly Sunny | 5 mph NE | 0% |
| Saturday Night | 46°F | Mostly Cloudy then Chance Rain Showers | 3 mph E | 48% |
| Sunday | 62°F | Rain Showers Likely | 3 to 8 mph E | 73% |
| Sunday Night | 44°F | Chance Rain Showers then Partly Cloudy | 3 to 8 mph NE | 28% |
| Monday | 60°F | Mostly Sunny | 8 to 12 mph NE | 0% |
| Monday Night | 42°F | Mostly Cloudy | 6 to 10 mph NE | 1% |
| Tuesday | 63°F | Partly Sunny | 7 to 10 mph NE | 2% |
| Tuesday Night | 42°F | Partly Cloudy | 3 to 10 mph NE | 4% |
| Wednesday | 64°F | Mostly Sunny | 7 mph E | 9% |
| Wednesday Night | 45°F | Mostly Cloudy then Slight Chance Rain Showers | 6 mph E | 24% |
| Thursday | 63°F | Slight Chance Rain Showers | 5 to 8 mph E | 24% |
| Thursday Night | 47°F | Slight Chance Rain Showers | 3 to 8 mph NE | 24% |
| Friday | 67°F | Slight Chance Rain Showers then Partly Sunny | 3 to 8 mph NE | 19% |
Forecast source: National Weather Service (api.weather.gov) for Calcium (44.041, -75.849). Updated through the day.
Growing snapshot for Calcium
Last spring frost
May 2
First fall frost
Oct 13
Growing season
163 days
Hardiness zone
5a
More local growing data for Calcium: nearby ZIP 13616 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Watertown, Ny (3.8 mi from Calcium). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.